Check router clock is in sync with server
----Where to check the clock of splynx? It is web managed.
Check service/customer is active
----It is active
Check radius Src Address field is same as external IP of NAS and no NAT and check your NAS IP in splynx routers config
----It is configured correctly, i see sessions from mikrotik originating at the IP that is configured.
Also at Radius is the mikrotik nas configured
It seems like Splynx radius doesnt receive requests from mikrotik, but mikrotik i see that tries to make them.